Flow measurement is an important aspect of many operations in the water industry and a good understanding of the metering process remains central to the efficient provision of clean water. For example, abstraction of water, dosing during water purification, metering into supply and metering to customers all require metering. The reasons for flow measurement vary from quality control, revenue calculation to environmental regulation. The required accuracy of flow measurement varies with application from better than 1% for water quality monitoring, up to 10% for environmental regulation.
The many and diverse metering applications within the water industry call for a wide range of metering technologies. For instance, magnetic flow meters are widely used in the main distribution system while open-channel meters are commonplace in monitoring flow between reservoirs. With much of the supply network buried, access is not easy and many meters are installed in situations that are far from ideal.
Typical clean water flow applications include: correct billing and accurate water consumption monitoring; optimisation of water usage; monitoring of water flow between reservoirs; irrigation water measurement; reverse osmosis water treatment; high purity water plant.
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